SB PROP @ ARL $ARLP017
ARLP017 Propagation de K7RA
ZCZC AP17
QST de W1AW
Propagation Forecast Bulletin 17 ARLP017
From Tad Cook, K7RA
Seattle, WA April 24, 2020
To all radio amateurs
SB PROP ARL ARLP017
ARLP017 Propagation de K7RA
The last day with a visible sunspot was April 4.
Over the past reporting week, April 16 to 22, average daily solar flux
was 69, down a half point from the previous week, when the average
was 69.5.
Average daily planetary A index was 7.3 while mid-latitude A index
was 7. This was up from 6.1 and 5, mainly due to the first
geomagnetic storm of 2020, which pushed planetary A index to 18 on
April 19. That event bumped up the average.
Solar flux numbers have been soft of late, with averages over recent
weeks of 71.1, 69.4, 70.2, 69.5 and now 69. Lower solar flux
probably means less rad
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SB PROP @ ARL $ARLP016
ARLP016 Propagation de K7RA
ZCZC AP16
QST de W1AW
Propagation Forecast Bulletin 16 ARLP016
From Tad Cook, K7RA
Seattle, WA April 17, 2020
To all radio amateurs
SB PROP ARL ARLP016
ARLP016 Propagation de K7RA
Sunspots are gone again. We are at the bottom of the solar cycle,
so conditions should only get better. There is an increase in
on-air activity due to the large number of people staying at home
because of Covid-19, and this week we seem to be overwhelmed with
reports of sporadic E openings.
The last observed sunspot disappeared on April 5, so weekly average
daily sunspot numbers declined from 5.1 last week to zero this
reporting week, April 9 to 15. Average daily solar flux went from
70.2 to 69.5.
Geomagnetic indicators remain quiet as well, with average daily
estimated planetary A
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===========================
*** 4 2 5 D X N E W S ***
**** DX INFORMATION ****
===========================
Edited by I1JQJ & IK1ADH
Direttore Responsabile I2VGW
Owing to the ongoing and fluid nature of the COVID-19 situation globally,
announced activities might be cu
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THIS WEEK'S CONTESTS
April 6 - 13, 2020 Edition
-----------------------------------------------------------------------------
THIS WEEK'S CONTESTS:
-----------------------------------------------------------------------------
IQRP Quarterly Marathon: 0800Z, Apr 6 to 2000Z, Apr 12
Geographic Focus: Worldwide
Participation: Worldwide
Mode: CW, SSB, Digital
Bands: All
Classes: Single Op
Max power: 5W
Exchange: RS(T)
Work stations: Once per mode
QSO Points: 3 points per CW QSO
2 points per SSB QSO
1 point per digital Q
... Читать дальше »
Вторник, 30.04.2024, 01:52
SB PROP @ ARL $ARLP017
ARLP017 Propagation de K7RA
ZCZC AP17
QST de W1AW
Propagation Forecast Bulletin 17 ARLP017
From Tad Cook, K7RA
Seattle, WA April 24, 2020
To all radio amateurs
SB PROP ARL ARLP017
ARLP017 Propagation de K7RA
The last day with a visible sunspot was April 4.
Over the past reporting week, April 16 to 22, average daily solar flux
was 69, down a half point from the previous week, when the average
was 69.5.
Average daily planetary A index was 7.3 while mid-latitude A index
was 7. This was up from 6.1 and 5, mainly due to the first
geomagnetic storm of 2020, which pushed planetary A index to 18 on
April 19. That event bumped up the average.
Solar flux numbers have been soft of late, with averages over recent
weeks of 71.1, 69.4, 70.2, 69.5 and now 69. Lower solar flux
probably means less rad
